SHORT COMMUNICATIONS R. W. McLEOD and G. T. KHAIR1 : Male intersexes in Meloidogyne thamesi Fig. 1. Variation in position of rudimentary vagina in intersexes of Meloidogyne thamesi. 1 Biological and Chemical Research Institute, Department of Agriculture, Rydalmere, N.S.W. Australia. 2116 562 Male intersexes are common in Meloidogyne javanica (Chitwood, 1949; Triantaphyllou, 1960; Whitehead, 1968; Orton Williams, 1972) and three male intersexes have been reported in M. incognita (Varma et al., 1971). Three male intersexes of Meloidogyne thamesi Chitwood in Chitwood, Specht & Havis were found in roots of grape (Vitis vinifera L.) collected in December, 1972 at Pokolbin in the Hunter Valley of New South Wales. Measurements and de Man ratios of the intersexes are: (n = 3) L = 1.236 mm (1.08-1.51); a --- 37 (34-40); b = 14 (8.8-16); c = 92 (88-100); T = 38 (33-43); V = 83,97,98 % ; spear = 20.6 (20-22) ¡Lm; gubernaculum = 8 (6-9) jim. Distance from anus to vulva 28, 33 and 158 ?m; this distance, measured to centre of vulva, in perineal patterns of five females of the same population is 20 jum (18-22). Two of the intersexes have a fully developed, single testis, containing spermatozoa,
Nematologica – Brill
Published: Jan 1, 1973
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